...enable and disable CD autorun?

procedure TForm1.SetCDAutoRun(AAutoRun: Boolean);
const
  DoAutoRun: array[Boolean] of Integer = (0, 1);
var
  Reg: TRegistry;
begin
  try
    Reg := TRegistry.Create;
    Reg.RootKey := HKEY_LOCAL_MACHINE;
    if Reg.KeyExists('System\CurrentControlSet\Services\Class\CDROM') then
    begin
      if Reg.OpenKey('System\CurrentControlSet\Services\Class\CDROM', False) then
        Reg.WriteBinaryData('AutoRun', DoAutoRun[AAutoRun], 1);
    end
  finally
    Reg.Free;
  end;
  ShowMessage('Your settings will take effect on the next reboot of Windows.');
end;

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